Echinoderm Quiz Flashcards
Chaeta?
Long hairs
gnatha?
jaw
Xeno?
foreiner
Turbella?
Rotated
Derma?
Skin
Hemi?
Half
Homo?
Single
zoa?
Animal
placo?
plated
idea?
in the form of
Crino?
lilly
Astero?
Star
Holo?
complete
What is a homolozoa?
single animal
Has a cillary groove (eats microorganisms)
Suspension feeder (filter)
What is heleoplacoidea?
rotated plated in the form of
suspension feeder
3 cilliary grooves
What is Crinoidea?
lilly in the form of
ambulacar grooves (random arms movement)
Suspension feeder
Seditary (stays in place)
What is Asteroidea?
star in the form of 5 arm symmetry joined at a central disk External digestion (carnovour)
What is Ophiuroidea?
offering up in the form of
Arms lengthen and become more flexable to provide movement
Suspension feeders
What is Echinoidea?
hedgehog in the form of
Arms fuse to form a ball
Ossicles lengthen for protection and movenment
Herbivour
What is Holothuroidea?
Complete passage way in the form of Minimized ossicles Mussle wall thickens for structures and movement Detritavour (eats decaying matter) Uses excretory system to poo
What two orders are extinct?
Homolozoa
Heleoplacoidea
What is the other name for Crinoidea?
sea lilies
What is the other name for Asteroidea?
sea star
What is the other name for Ophiuroidea?
Brittle Star
What is the other name for Echinoidea?
Sea Urichins
What is the other name for Holothuroidea?
Sea Cucumber
What is an ossicle?
boney; spikes
What is the water vasscular system?
Water goes through the Madreporite (drain looking thing) through the stone canal where it is transported around the ring canal to all the 5 radial canals. It fills up ampulia (where water is held). When the sea star needs to move, water releases out of the ampulia.
